ios - 从 iOS 应用程序到 Google 表单的 HTTP POST

Question

我正在处理 POST 请求并且一直在使用这个 answer .有很多文档 NSUrlRequest(和连接)，但我无法弄清楚为什么请求不起作用。

1. 我已使用此代码使用 HTTP Dev Client 成功执行了 POST

   entry.0.single=name&entry.1.single=location&entry.4.single=phoneNumber&entry.2.single=order????&pageNumber=0&backupCache=
   

2. 4 个变量(姓名、位置、电话号码、订单)都链接到应用中的文本字段。

   - (IBAction)placeOrder:(id)sender {
       NSURL *nsURL = [[NSURL alloc] initWithString:@"url"];
       NSMutableURLRequest *nsMutableURLRequest = [[NSMutableURLRequest alloc] initWithURL:nsURL];
   
       // Set HTTP method to POST
       [nsMutableURLRequest setHTTPMethod:@"POST"];
   
       // Set up the parameters to send.
       NSString *paramDataString = [NSString stringWithFormat:@"%@=%@&%@=%@&%@=%@&%@=%@&pageNumber=0&backupCache=",@"entry.0.single", _name, @"entry.1.single", _location, @"entry.4.single", _phoneNumber, @"entry.2.single", _order];
   
       // Encode the parameters to default for NSMutableURLRequest.
       NSData *paramData = [paramDataString dataUsingEncoding:NSUTF8StringEncoding];
   
       // Set the NSMutableURLRequest body data.
       [nsMutableURLRequest setHTTPBody: paramData];
   
   
       // Create NSURLConnection and start the request.
       NSURLConnection *nsUrlConnection=[[NSURLConnection alloc]initWithRequest:nsMutableURLRequest delegate:self];
   
       [ nsUrlConnection start];
   
   }
   

我想我可能遗漏了一些微妙的东西，但我一直在仔细阅读 stackoverflow 和开发人员文档。任何想法将不胜感激。谢谢

Answer 1

您需要实现 NSURLConnectionDelegate 协议(protocol)，将 [nsUrlConnection setDelegate:self]; 放入您的代码中并添加 -connectionDidFinishLoading: 、-connection:didReceiveData: 和 -connectionDidFailWithError: 方法到您的代码中并捕获响应数据:

.h
NSMutableData *responseData;

.m
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
    responseData = [[NSMutableData alloc] init];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
    [responseData appendData:data];
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
    NSLog(@"RESPONSE: %@", [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]);
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
    NSLog(@"CONNECTION ERROR: %@", [error localizedDescription]);
}